A severe skin infection in dogs, often referred to as pyoderma, can be caused by bacteria, fungi, parasites, or underlying conditions like allergies, hormonal imbalances, or immune system disorders. Symptoms may include redness, swelling, pustules, crusting, hair loss, intense itching, and a foul odor. In severe cases, the infection can lead to open sores, pain, and systemic illness. Bacterial infections (commonly caused by Staphylococcus) are the most frequent culprits, but yeast infections